Because your world is contained in your consciousness, as mentalism teaches, you can best help that world by improving and correcting your consciousness. In attending to your own inner development, you are putting yourself in the most effectual position to promote the development of other persons. Philosophy is fully aware of, and concerned with, the misery and the suffering which are rampant everywhere. It does not approve of selfishness, or indifference to the welfare of others. Yet, at the same time, it does not permit itself to be swept away by blind emotionalism and unreasoned impulsiveness into doing what is least effective for humanity. It calls wisdom in to guide its desire to serve, with the result that the service it does render is the most effective possible.